Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1. [Repealed, 44 SR 610, effective
3/31/2020]
IFC Section 909.4 is amended by adding a section to
read:
909.4.7
Door opening
force. With any of the design methods allowed by Section 909, the door
opening force, latch release, and set-in-motion force shall comply with Section
1008.1.2 requirements when the system is in smoke control mode.
Subp. 1a.
IFC section
909.1.
IFC section 909.1 is amended to read as follows:
909.1
Scope and purpose. This
section applies to mechanical or passive smoke control systems when they are
required for new buildings or portions thereof by provisions of this code or
the Building Code. The purpose of this section is to establish minimum
requirements for the design, installation, and acceptance testing of smoke
control systems that are intended to provide a tenable environment for the
evacuation or relocation of occupants and for fire suppression and overhaul
efforts. These provisions are not intended for the preservation of contents or
the timely restoration of operations.
Subp. 1b.
IFC section 909.4.6.
IFC section 909.4.6 is amended to read as follows:
909.4.6
Duration of operations.
All portions of the active or passive smoke control system shall be capable of
continued operation after detection of the fire event for a period of not less
than 20 minutes. System design shall be for 20 minutes; however fans shall
continue to operate after 20 minutes and shall continue to operate
automatically for smoke removal during fire suppression and overhaul efforts
for a minimum of 5 minutes for every 10 feet vertically of protected
space.
Subp. 1c.
IFC section 909.4.8.
IFC section 909.4 is amended by adding a section to read as
follows:
909.4.8
Door opening
force. With any of the design methods allowed by Section 909, the door
opening force, latch release, and set-in-motion force shall comply with Section
1010.1.3 requirements when the system is in smoke control mode.
Subp. 1d.
IFC section
909.20.
IFC section 909.20 is amended and a section added to
read:
909.20
Maintenance.
Smoke control systems and post-fire smoke exhaust systems shall be maintained
to ensure to a reasonable degree that the system is capable of controlling
smoke for the duration required. The system shall be maintained in accordance
with the manufacturers instructions and Sections 909.20.1 through 909.20.7.
(Sections 909.20.1 to 909.20.6 remain unchanged.)
909.20.7
Qualifications. Special
inspection agencies for smoke control shall have expertise in fire protection
engineering, mechanical engineering, and certification as air
balancers.
Subp.
2.
IFC section 909.22.
IFC section 909 is amended by adding a section to read:
909.22
High-rise and covered mall
smoke-exhaust systems. High-rise buildings, not provided with a smoke
control or a post-fire smoke exhaust system, shall be equipped with a smoke
removal system installed and maintained in accordance with the Building Code.
Covered mall buildings exceeding 50,000 square feet (4,645
m2) in floor area, excluding anchor stores, and not
provided with a smoke control system, shall be equipped with a post-fire smoke
exhaust system installed and maintained in accordance with the Building
Code.
Statutory Authority: MS s
299F.011;
326B.02
